Presses



gNgrModel.) 4 She e tS-Sheet 2.

A. K. TAYLOR. l AUTOMATIC TRIP MEOHANISM PUR PRINTING PRESSES.

Nm-561,259. y Pafented s e-pt. 8, 18.96.."

Aco. puormuwo, wAsnlnn-rou. u. c.

L J u w oo, Uvr h 1 .N S S 1 .N 0 E oo N ZK S n m L e n .n R p fw U Uu sP e h 4 G S UN m a M M m Sgm.. n n 6 R R M Y Am T m a x An M m .NNGL ml.m M M 5 www@ U 7 w A w w M0 www m o 0 m m N.

'UN IT-ED STATES 4PATENT OFFICE.

, ARTHUR K. TAYLOR, OE WILMINGTON, DELAWARE, AssICNOR To THE ECONOMICMACHINE COMPANY, OE NEW YORK, N. Y..

AUTOMATIC TRIP IVIECHANISIVI FOR PRINTING-PRESSES.

SPECIFICATION forming part of Letters Patent No. 567,259, datedSeptember 8, 1896. Application filed February 10,1896. Serial No.578,677. (No model.)

To LZ2 whom, t may concer/1,.

Be it known that l, ARTHUR K. TAYLOR, a citizen of the United States,residing at iVilmington, in the county of New Castle and State ofDelaware, have invented new and useful Improvements in Automatic TripMechanisms for Printing-Presses, of which the 4fol-` lowing is aspecification.

The object of my invention is to construct a sensitive and reliable tripmechanism for rendering inoperative a printing press or other machine towhich sheets of paper are fed, except when a sheet of paper is properlypresented to the feeding or gripping devices.

In the accompanying drawings, consisting of four sheets, Figure 1 is afragmentary side elevation, partly in section, o f a printingpressprovided with my improved trip mechanism. Fig. 2 is a transverse view ofa portion of the mechanism illustrated in Fig. 1. Fig. 3 is a sideelevation, on an enlarged scale, of the trip mechanism, showing theposition of the parts during the normal operation of the press. Figs. 4and 5 are similar views showing two positions of the trip mechanismpreparatory to stopping the press. Fig. 6 is a fragmentary transversesection, on an enlarged scale, of the trip mechanism. Fig. 7 is a bottomplan view of the same. Fig. 8 is a sectional side view, on an enlargedscale, of the guide or detector lever and connecting parts. Fig. 9 is adetached view of the adjustable contact-bolt. Fig. 10 is a front view ofthe detector-lever. Fig. 11 is a bottom plan view of the same. Fig. 12is a fragmentary sectional elevation of the detectorlever, showing amodiication of the Contact devices. Fig. 13 is a front elevation of thesame. Fig. 14. is a bottom plan view-of the same. Fig. 15 is a detachedside elevation of one of the contacts. Figfl is a front view of thesame. Fig. 17 is a diagram illustrating the electric circuit.

Like letters of reference refer to like parts in the several figures.

In Fig. 1 is represented in dotted lines a portion of an ordinary'formof reciprocating 'bed and cylinder-press, the operation of theVimpression-cylinder being controlled by a clutch A, adapted to beactuated bya clutchfork a, while the operation of the feeding devices iscontrolled by another clutch A', which operates the pins of thetumbler-box in the usual Inanner and which is adapted to be actuated byan arm a. The clutch-fork a is carried by a rock-shaft d2, having an armd3, connected by a rod a4 to a vertically-reciprocating 'slide a5, whichlatter is guided on the main frame and acted upon by springs d, tendingto raise it. The rock-shaft a2 has another arm a7, which is connected bya rod as to a bell-crank lever a", the latter being connected by a rodd10 to an arm au on a horiing devices are in operation, but when saidslide a5 is depressed the clutches will be disengaged and theimpression-cylinder and feeding devices are rendered inoperative.

In order that the operation or tripping of the press may be rendereddependent upon the presence or absence of a sheet of paper in properposition to be caught by the feeding devices of the press, I employmechanism which l- Will noW proceed to describe.

On the slide a5 is a pivoted catch or trigger b, which is normally heldin the retracted position shown in Fig. 3 by means of a spring b', andto this trigger b is pivoted a supplementary trigger or toe b2, theupper end of which is normally held in.a retracted position by meansfofa spring 118, the toe b2, however, being capable of a limitedindependent movement on the trigger b to an extent liniitedby thecontact of said toe with the stop b4 on said trigger Z). Y

To suitable guides on the same frame which carries the slide a5 isadapted another slide d, to which, during the operation of the press, aconstant vertical reciprocation is imparted by reason of the engagementof an antifric.- tion-roller d at the upper end of the slide d with acam-groove d2 on the horiZontally--reciprocating bed of the press. TheAlower end of the upper slide'd is providedwith an inclined or beveledface D, which is adapted Ioo eye on the'lower end of a bolt f3.

to engagewith the toe or trigger of the lower slide for coupling the twoslides together.

A pin d3 on the slide d is connected by a rod d4 to ahorizontally-movable slide d5, suitably guided in a plate d of the xedframe, said slide d5 carrying an electromagnet (ZT.

Hence as the slide d reciprocates in a verti-A cal plane the slide d5will be reciprocated in a horizontal plane and the magnet (Z7 will becaused to approach and recede from the toe d2, which latter serves as anarmature for the magnet.

The upper slide is preferably connected with the main frame by a springD2, which constantly tends to raise the upper slide and normally holdsthe slide in its highest position, so Ythat the roller d upon leavingthe cam-groove d2 during the forward movement Lofvvtlfe'bed will be inthe proper position to again engage with said groove during thesubseguentbackward movement thereof.

4 Suitably pivoted adjacent to the impressioncylinder is a detector orguide lever f, (see Figs. 8 to.`1l,) this detector-lever consisting ofan Iarm provided'at its front end with a downwardly-projecting frontguide F. f is a plate which is pivoted with its upper ,end tothe frontside of the front guide, and

which isprovided with afinger f2, projecting rearwardly through anopening in the guide `Fand normally resting in contactwithan y The upperendl of this bolt is threaded and engages with `.'anu't f4, mountedbetween two lugs on the backy ofthe front' guides F, so that byopervatingqsaid nut the bolt f3 can be adjusted `vertically as desired.

` vThe electromagnet Z7 is contained in a circuit, of which t-he. boltf3 constitutes one terminal and the plate f the other terminal, as

`Hence whenever the iinward the depending portion of the arm f theiinger f2`will be lifted from contact with the eye of the bolt f3 andthe circuit will be `broken and the magnet thus rendered inactive.l

The movement of the electromagnet toward and from the armature of thetrigger is so timed that it stands in working proximity to thetriggerwhen a sheet is supposed to be ,present at the front guide and thecircuit is expected to be broken by the engagement of the front edge ofthe sheet against the pivoted plate f', but the magnet is removed from,the vicinity of thetrigger at all othertimes. ,Whem therefore, a sheetof paper is properly Aedto theimpressionfeylinder, the front edge lofythe sheet yof paper will engage with the .lower portion of the Vplate fand move the same forward, thereby breaking the circuitv and preventingthemagnet, which at this time stands close to the trigger, fromattractingthe latter. In this manner the reciproeating magnet willalways be deenergized as it approaches the trigger `during the normaloperation of the press, and the toe and trigger will both remainretracted out of the path of the reciprocating upper slide, so that thelower slide remains at rest in its elevated lposition and vholds theclutches ofthe impression-cylinder and feeding device in their coupledposition. 4

If no sheet has been presented to the front guide, or if a sheet has notbeen placed properly against the front guide so as to break the circuit,the magnet remains energized as it approaches the trigger and attractsthe armature of the same, thereby carrying the upper end of the triggerunderneath the i11- clined or beveled lower face D of the upper slide d,as shown in Fig. 4:. vThe outward movement of the toe b2, which is begunby the action of the magnet C17, is continued by the action of thebeveled lower end ofthe slide d, and such movementis communicated to thetrigger I), as shown in Fig. 5, owing to the fact that when the toet2 ismoved to the position shown in Fig. et it has a rigid bearing upon theshoulder b4 of the trigger b, and hence becomes in effect arigidprojection of said trigger and imparts to the latter any outwardmovement which it may receive.

After the trigger has been directed by the magnet underneath theinclined or beveled face of the uppervslide the latter during itsdescent moves the trigger laterally without .effecting the lower slideuntil thetrigger envthe upper slide is transmitted 'tothe lower slidevandfrom the latter by the intermediate mechanism tothe clutches fortripping the impression-cylinder andfeeding devices and rendering thesame inoperative. The arm a', which connects with the gripper-clutch A,acts upon the pins which enter the tumblerbox on the end of thegripper-shaft in a wellknown mannen The fork a connects with the clutchA of the bed and thereby operates the ordinary trip mechanism which liscommonly used on two-revolution presses and which sets in motionmechanism which lifts the cylinder, so that the type will not touch thepaper. Then the mechanism is organized as hereinafter described, thepresscontinues to r'un,'but refuses to printv or to take the sheet fromthe feed-table until it is so fed that the sheet touches the guidesand'breaks the circuit.

As the upper end of thetrigger h is moved outward by the action of thebeveled lower end of the slide d the magnet Z7 is withdrawn by theretraction of thevslide d5, said magnet resuming its normal position asthe slide d rises. rlhe magnet @Z7 might be strong enough to pull thetrigger l) directly into engagement with the lower end of the slide d,ybut by the use of the lighter toe b2 the work of the magnet ismaterially lessened and the apparatus is rendered operative with the useof a much IOC IIO

weaker current than would otherwise be re` quired.

In Figs. l2 to 16 I have illustrated a modifiedY form ofcircuit-breaking device in which a spring-plate c' is mounted upon thefront side of the front guide and carries at its lower end aninwardly-proj ectin g hooked contact-finger t', which is adapted tocontact with a terminal plate 'i2 on the back of said depending portionof the arm.4 Each of the plates i and 712 is preferablyT made of springmetal and secured at its upper end to the front guide by pins i? 4,arranged vertically in line. The lower end of the front plate isadjusted toward and from the lower end of the rear plate by anadjusting-screw t5, arranged in .a screw-threaded opening in the frontguide and engaging with the springplate 't' between its supporting-pins,so that by turning the adjusting-screw in the proper direction theportion of the plate between the pins will be deflected more or less andthe lower end of the plate c' shifted accordingly. The lower end of therear springplate i2 is in like manner adjusted by an adjustingscrew 6,engaging with a screwthreaded opening formed in the rear springplatebetween its supporting-pins and en gaging with its end against the frontguide. When the lower end of the plate z' is carried forwardly by theaction of the paper, the contact-plates c" 712 will be separated and thecircuit broken, but when the lower end of the plate 'i is permitted toremain projected the plates c" 'i2 will remain in contact and thecircuit will be complete.

The detecting device may be so located that its trip-plate will engagewith the sheet of paper at any desired point. Thus if a single detectoris used it may be located midway between the opposite edges of thesheet, or if a pair of detectors are used one may be located near eachedge of the sheet and the circuit may pass through both detectors, sothat both detectors plates will have to be depressed in order to breakthe circuit, the result in this case being that the press will betripped either when no sheet is presented for the action of the printingdevices or when the sheet self specifically thereto, since manymodifications of detail may be made without departing from the mainfeatures of my invention.

I therefore claim and desire to secure by Letters Patent- 1. Thecombination with two normally-disengaged parts of the tripping mechanismof a printing-press or other machine to which sheets of paper are fed,one of which parts is normally reciprocated by engagement with somemoving part of the press while said other part is lnormally at rest, ofa catch or trigger carried by one of said parts and adapted to couplethe same to the other part, an electromagnet for operating said catch ortrigger, mechanism whereby said electromagnet is moved toward and fromsaid catch or trigger to bring the magnet alternately within operativedistance of the same and remove it therefrom, and a circuit-breakerwhich is acted on by the sheet, substantially as set forth.

2. The combination with two normally-disengaged parts of the trippingmechanismof a printing-press or other machine to which sheets of paperare fed, one of which parts is normally at rest, of a catch or triggercarried by one of said parts, provided with an armature and adapted tocouple both parts together, an clectromagnet for operating upon saidarmature and catch or trigger, mechanism whereby said electromagnet ismoved toward and from said armature to bring said magnet alternatelywithin operative distance of said armature and remove it therefrom, anda circuit-breaker which is acted on by the sheet, substantially as setforth.

3. The combination with two normally-disengaged parts of the trippingmechanism of a printing-press or other machine to which sheets of paperare fed, one of which parts is normally reciprocated by engagement withsome moving part of the press while said other part is normally at rest,of a catch or trigger adapted to couple said parts together and mountedon the part which is normally at rest, an electromagnet for operatingsaid catch or trigger, and a circuit-breakerwhich is acted on by thesheet, substantially as set forth.

4. The combination with two normally-disengaged parts of the trippingmechanism of a printing-press or other machine to which sheets of paperare fed, one of which parts is normally reciprocated by engagement withsome moving part of the press while said other part is normally at rest,of" a catch or trigger adapted to couple said parts together and mountedon the part which is normally at rest, an electromagnet for operatingsaid catch or trigger, mechanism whereby said magnet is movedalternately toward and from said catch or trigger, and a,circuit-breaker which is acted on by the sheet, substantially as setforth.

5. The combination with two slides, one normally at rest and connectedwith the trip mechanism of the press and the other reciprocated by somemoving part of the press, ofv a catch or trigger adapted to couplesaidparts together and mounted on the part which is normally at rest, anelectromagnet which is reciprocated toward and from said catch ortrigger in a direction which does not coincide with that of saidreciprocating slide and a circuit-breaker which is acted on by thesheet, substantially as set forth.

6. The combination with two slides, one

IOO

IIO

normally at rest and connected with the trip mechanism of the press andthe other reciprocated by some moving part of the'press, of a catch ortrigger adapted to couple said parts together and mounted on the partwhich is normally at rest, an electromagnet moving on Ways arranged atright angles to these Ways of the reciprocating slide, a link connecting said reciprocating slide With said magnet and a circuit-breakerWhich is acted on by the sheets, substantially as set forth.

7. The combination With tWo slides, one connected to the trip mechanismof the press and the other reciprocated by engagement with some movingpart of the press, of a catch or trigger carried by one of said slides,a pivoted toe mounted on said catch or trigger, an electromagnet actingon said pivoted toe so as to draw it into engagement With the otherslide, and a circuit-breaker acted on by the fa Y567,259

fitness my hand this 3d day of February, 1890.

ARTHUR K. TAYLOR. Witnesses:

WINFIELD H. SMITH, EDWARD T. PRICE.

